Comparison of Process Chains for the Supply of Bio-Fuels

Abstract

When planning projects for the energetic utilization of biomass, invest- ment costs as well as expenses for the processing and supply of bio-fuels must be precisely determined. The calculation of realistic prices for bio- fuels requires the consideration of complete engineering process chains, which include all work steps from the cultivation of the vegetable bio- mass to the spreading or disposal of the ashes. In feasibility studies, of- ten only simplified machinery chains or global values are considered. When the planning program HORTEB was developed, data for numerous work steps were collected and used for a comparison of different simpli- fied and complete process chains.